Seite - 231 - in Emerging Technologies for Electric and Hybrid Vehicles

Energies 2016,9, 410 (4) switchingfrequency fsw: 20kHz; (5) capacitorsCH=CL=33μF,CM1 =CM2 =33μF,CB=10μF; (ESRofCH,RCH=0.064Ω;ESRofCL, RCL=0.062Ω,ESRofCM1,RCM1=0.16Ω;ESRofCM2,RCM2=0.16Ω;ESRofCB,RCB=0.062Ω); (6) inductorsL1 =L2 =Ls=800μH;La=Lb=1.5μH(IHLP-6767GZ-A1); (ESRofL1,RL1 =0.18Ω, ESRofL2,RL2 =0.18Ω,ESRofLa,RLa=13.6mΩ;ESRofLb,RLb=13.6mΩ); (7) power switchesS1~S4: IXFH160N15T2, 150V/160A/RDS(on) =9mΩ, TO-247AC;Q1,Q3,Q4: FDA59N30, 300V/59A/RDS(on) = 56mΩ, TO-247AC;Q2: W25NM60, 650V/21A/RDS(on) = 160mΩ,TO-247AC. Figure 15 show the simulated low-sidefilter currents (iLa, iLb), gate signals of active switches (Q1,Q2) and two-phase inductor currents (iL1, iL2) in charge state at full load condition. Also the correspondingexperimental resultsareshowninFigure16.Onecanobserve thatbothresultsare in very closeagreement aswell. FromFigures 15aand16a, as canbe seen, the low-sidefilter (La,Lb) caneffectively limit theswitchingcurrentspikeandshapethecurrent toanearlyrectifiedsinusoidal waveform.Also, fromthefigures it isobservedthatby interleavedcontrolling thedutycyclesof0.48 for theswitches (Q1,Q2), the two-phasecurrents (iL1, iL2)are incomplementaryrelationandinCCM. (a) Lai Lbi (b) Figure 15. Simulatedwaveformsof the studiedBDCincharge state at full load: (a) low-sidefilter currents iLa, iLb; (b)gatesignalsofQ1,Q2 andtwo-phase inductorcurrents iL1, iL2. 231